Back to EveryPatent.com
United States Patent | 5,132,552 |
Ito ,   et al. | July 21, 1992 |
A linear interpolator comprising an amplifier, an integrator for integrating an output of the amplifier, a feedback circuit connected between the amplifier and the integrator for bootstrapping an input voltage of the amplifier by an output voltage from the integrator, and a switch for periodically supplying a staircase input signal to the amplifier. A linearly interpolated output is derived from the integrator. The discrete input signal changing stepwise can be linearly interpolated with high accuracy.
Inventors: | Ito; Takeshi (Kawasaki, JP); Fujita; Yuji (Kawasaki, JP) |
Assignee: | Kikusui Electronics Corporation (Kanagawa, JP) |
Appl. No.: | 743789 |
Filed: | August 12, 1991 |
Aug 14, 1990[JP] | 2-213692 |
Current U.S. Class: | 327/100; 327/345; 327/589 |
Intern'l Class: | H03K 005/00; H03K 017/687; G06G 007/12; G06G 007/18 |
Field of Search: | 328/127,128,176,13,14 307/264,352,359,578,482,490,261 330/293 307/261 |
4223271 | Sep., 1980 | Furukawa | 328/128. |
4365204 | Dec., 1982 | Hague | 328/127. |
4524326 | Jun., 1985 | Larson | 328/14. |
4584559 | Apr., 1986 | Penney | 340/340. |
4894620 | Jan., 1990 | Nagaraj | 328/127. |